A while ago I bought this non-contact metal detector module from an online store to see how it functions, and what I need to build it. The cheap module I received from China had no instruction manual ...

Looking for a light project to teach young hackers some very basic electronics? Here’s a quick and easy weekend project, a simple metal detector! We all know 555 timers are very useful and po… ...

In the video embedded below, he shows off a homemade voltage detector circuit that he constructed using a trio of BC547 NPN transistors. The circuit is pretty simple though very useful all the same.

In these times of increased terrorist threats, the possibility of some type of nuclear incident exists. By using a few simple components, it's possible to build a low-cost Geiger detector ...

Team discovers fast, simple way to create two-dimensional electronic circuits that could potentially lead to a new generation of electronic devices.

The final circuit was very flexible and thin, just like paper, even after adding the components. To demonstrate the degradability of the circuit, the team showed that the entire unit quickly burned to ...

Miniature spectrometers available from a number of manufacturers also have a suitable electronic available. Most often used as the detection element in spectrometers, this combination of linear ...

With just a room-temperature “pot,” a sprinkling of molecules, and a simple electrical device, pathogen DNA detection can now be achieved in under an hour anywhere. This method creates ...

Toshiba’s Thermoflagger™ over-temperature detection ICs, in combination with PTC thermistors, detect temperature rises in electronic equipment.

The metal detector circuit shown here must represent the limits of simplicity for a metal detector, yet the design works surprisingly well. It uses just one 40106 hex Schmitt inverter IC, a capacitor ...